diff --git a/.buildkite/run-repository.sh b/.buildkite/run-repository.sh
index ce9344e8d..04d4440f0 100755
--- a/.buildkite/run-repository.sh
+++ b/.buildkite/run-repository.sh
@@ -21,6 +21,7 @@ echo -e "\033[34;1mINFO:\033[0m TEST_SUITE ${TEST_SUITE}\033[0m"
 echo -e "\033[34;1mINFO:\033[0m NOX_SESSION ${NOX_SESSION}\033[0m"
 echo -e "\033[34;1mINFO:\033[0m PYTHON_VERSION ${PYTHON_VERSION}\033[0m"
 echo -e "\033[34;1mINFO:\033[0m PYTHON_CONNECTION_CLASS ${PYTHON_CONNECTION_CLASS}\033[0m"
+echo -e "\033[34;1mINFO:\033[0m ES_YAML_TESTS_BRANCH ${ES_YAML_TESTS_BRANCH}\033[0m"
 
 echo -e "\033[1m>>>>> Build [elastic/elasticsearch-py container] >>>>>>>>>>>>>>>>>>>>>>>>>>>>>\033[0m"
 
@@ -42,6 +43,7 @@ docker run \
   --env "ELASTICSEARCH_URL=${elasticsearch_url}" \
   --env "TEST_SUITE=${TEST_SUITE}" \
   --env "PYTHON_CONNECTION_CLASS=${PYTHON_CONNECTION_CLASS}" \
+  --env "ES_YAML_TESTS_BRANCH=${ES_YAML_TESTS_BRANCH}" \
   --env "TEST_TYPE=server" \
   --env "FORCE_COLOR=1" \
   --name elasticsearch-py \
diff --git a/.buildkite/run-tests b/.buildkite/run-tests
index 8d0eb7ffd..2f37ec9f0 100755
--- a/.buildkite/run-tests
+++ b/.buildkite/run-tests
@@ -9,6 +9,7 @@ export STACK_VERSION="${STACK_VERSION:=8.0.0-SNAPSHOT}"
 export TEST_SUITE="${TEST_SUITE:=platinum}"
 export PYTHON_VERSION="${PYTHON_VERSION:=3.14}"
 export PYTHON_CONNECTION_CLASS="${PYTHON_CONNECTION_CLASS:=urllib3}"
+export ES_YAML_TESTS_BRANCH=${BUILDKITE_PULL_REQUEST_BASE_BRANCH:=main}
 
 script_path=$(dirname $(realpath $0))
 source $script_path/functions/imports.sh
diff --git a/test_elasticsearch/test_server/test_rest_api_spec.py b/test_elasticsearch/test_server/test_rest_api_spec.py
index 4e3ff74a9..6db2b1125 100644
--- a/test_elasticsearch/test_server/test_rest_api_spec.py
+++ b/test_elasticsearch/test_server/test_rest_api_spec.py
@@ -25,6 +25,7 @@
 import json
 import os
 import re
+import subprocess
 import warnings
 import zipfile
 from typing import Tuple, Union
@@ -35,6 +36,7 @@
 
 from elasticsearch import ApiError, ElasticsearchWarning, RequestError
 from elasticsearch._sync.client.utils import _base64_auth_header
+from elasticsearch._version import __versionstr__
 from elasticsearch.compat import string_types
 
 # some params had to be changed in python, keep track of them so we can rename
@@ -499,12 +501,29 @@ def remove_implicit_resolver(cls, tag_to_remove):
     # Construct the HTTP and Elasticsearch client
     http = urllib3.PoolManager(retries=urllib3.Retry(total=10))
 
-    yaml_tests_url = (
-        "https://api.github.com/repos/elastic/elasticsearch-clients-tests/zipball/main"
-    )
+    branch_candidates = []
+    if "ES_YAML_TESTS_BRANCH" in os.environ:
+        branch_candidates.append(os.environ["ES_YAML_TESTS_BRANCH"])
+    git_branch = subprocess.getoutput("git branch --show-current")
+    if git_branch not in branch_candidates:
+        branch_candidates.append(git_branch)
+    package_version = __versionstr__.rsplit(".", 1)[0]
+    if package_version not in branch_candidates:
+        branch_candidates.append(package_version)
+    if "main" not in branch_candidates:
+        branch_candidates.append("main")
+
+    response = None
+    branch = "main"
+    for branch in branch_candidates:
+        yaml_tests_url = f"https://api.github.com/repos/elastic/elasticsearch-clients-tests/zipball/{branch}"
+        response = http.request("GET", yaml_tests_url)
+        if response.status != 404:
+            break
+    assert response is not None
 
     # Download the zip and start reading YAML from the files in memory
-    package_zip = zipfile.ZipFile(io.BytesIO(http.request("GET", yaml_tests_url).data))
+    package_zip = zipfile.ZipFile(io.BytesIO(response.data))
 
     for yaml_file in package_zip.namelist():
         if not re.match(r"^.*\/tests\/.*\.ya?ml$", yaml_file):
@@ -562,7 +581,9 @@ def remove_implicit_resolver(cls, tag_to_remove):
             elif pytest_test_name in SKIPPED_TESTS or pytest_param_id in SKIPPED_TESTS:
                 pytest_param["skip"] = True
 
-            YAML_TEST_SPECS.append(pytest.param(pytest_param, id=pytest_param_id))
+            YAML_TEST_SPECS.append(
+                pytest.param(pytest_param, id=f"[{branch}]{pytest_param_id}")
+            )
 
 except Exception as e:
     warnings.warn(f"Could not load REST API tests: {str(e)}")